Xeon W3520 3845A935 - DFI UT X58-T3EH8

[ChinStrap]

Max Uncore Frequency @4645.6Mhz

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I thought i dropped a line in this thread last night, but GREAT numbers eva. my god. The amount of time you have put in on that DFI is out-freaking-standing. is that the same board you have had since launch?

 

[eva2000]

Yeah had this DFI UT X58-T3EH8 since Dec 24, 2008

Max Bclk Validation​

So far 235bclk is max for validation. Messing with voltages to see if I can get more

 

[Voidn]

WICKED!

Since you obviously throw intel specs to the wind, what would you consider max safe vcore for 24/7 use (not considering temps)?

 

[xtkxhom3r]

so what was the max stable clock with ht???

 

[eva2000]

24/7 anywhere between 1.25-1.35v as low as temps <80-85C

max stable ht for what ? for benching ? or everyday ? 4ghz at 1.184v is what i like with 19x211bclk 844mhz on memory 6-7-6.

 

[xtkxhom3r]

everyday use like 1-3 hrs of prime nothing crazy like 12hrs of prime

 

[eva2000]

24/7 = HT Enabled @4GHZ at 1.184v is what i like with 19x211bclk 844mhz on memory 6-7-6

 

[xtkxhom3r]

lucky you man i dont know how you guys always get teh golden chips

 

[eva2000]

Actually for i7/x58 cpu clocking and memory clocking is tied by the voltages - get the memory side voltages and settings right and your cpu clocking side goes alot more smoothly

 

[eva2000]

Now that I started testing my uncore frequency overhead on W3520, thought I'd see how far I can push it on regular water cooling.

Dropped bclk to 210-214 and bumped uncore multiplier from 16x default with 8x mem multiplier, to 22x uncore multiplier and managed to push it to @4663Mhz uncore frequency Super Pi 32M stable, @4707Mhz for 4M stable and Everest and screenshot @4760Mhz uncore frequency !!!! Had to jack up both CPU VTT and VDIMM voltage to reach such uncore frequencies

Uncore frequency = 4663.5Mhz​

Uncore frequency = 4707.8Mhz​

Uncore frequency = 4760.2Mhz​

System:

• Intel Xeon W3520 3845A935 D0 (Xeon equivalent of Core i7 920 D0)
• EK Supreme LT 1366 / FESER 480 / MCP655
• DFI UT X58-T3EH8 04/28 beta
• HD4870x2 (HIS 4870X2 to Asus Top bios) with ATI WinXP 9.5
• 6GB Corsair Dominator GT DDR3-2000Mhz 7-8-7-20
• 750GB Samsung SATAII
• Silverstone OP1200 PSU
• Triple boot - WinXP Pro SP3 / Vista Ultimate 64Bit SP2 / Win7 Ultimate 64bit RC

 

[eva2000]

Pushed the system a bit higher for wPrime v1.55 from 4500mhz to 4600+mhz but used Windows Vista Ultimate 64bit SP2. Limited by water cooling seems as 1024M @4664Mhz fails around 77% mark into the run

32M @4664Mhz

1024M @4622Mhz

System:

• Intel Xeon W3520 3845A935 D0 (Xeon equivalent of Core i7 920 D0)
• EK Supreme LT 1366 / FESER 480 / MCP655
• DFI UT X58-T3EH8 04/28 beta
• HD4870x2 (HIS 4870X2 to Asus Top bios) with ATI WinXP 9.5
• 6GB Corsair Dominator GT DDR3-2000Mhz 7-8-7-20
• 750GB Samsung SATAII
• Silverstone OP1200 PSU
• Triple boot - WinXP Pro SP3 / Vista Ultimate 64Bit SP2 / Win7 Ultimate 64bit RC

 

[Bo_Fox]

Hey eva2000, I just got a T3eH8 and 920.. BIOS is already updated to the latest official (May 8)--is it the same as the beta 04/28 bios you're using? Why arent you using the 05/08 version?

Just curious.. after I lap my new IFX-14 cooler that is so badly curved at the base (so bad that it wobbles when I place it flat on the dinner table), I'm gonna overclock the hell outta the 920 no matter how good/bad the chip is.